LM358N


Dual general-purpose op-amp, 1MHz, 3-32V single supply, GND-referenced, PDIP-8

20000

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制造商零件:

LM358N

包装:

PDIP-8 (9.81 x 6.35 x 4.57mm, 2.54mm pitch, through-hole)

品牌:
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说明

产品概览

The LM358N from Texas Instruments is the dual version of the LM324 — two general-purpose op-amps with single-supply operation (3V-32V), ground-referenced inputs, and 1MHz bandwidth in an 8-pin PDIP package.

主要规格

通道数 2 (dual, independent)
Supply Voltage Range 3V to 32V (single) or ±1.5V to ±16V (dual)
增益-带宽乘积 1MHz typical
压摆率 0.5V/µs typical
Open-Loop Voltage Gain 100dB typical
输入失调电压 2mV typical, 7mV max
输入偏置电流 45nA typical
Input Common-Mode Range 0V to V+−1.5V (includes GND)
Output Voltage Swing 0V to V+−1.5V
Supply Current (both amps) 350µA typical
工作温度 0°C to +70°C
包装 PDIP-8 (9.81 x 6.35mm)

特点

  • Two internally compensated op-amps in one 8-pin package
  • Single-supply operation: 3V to 32V
  • Input common-mode range includes ground
  • Output swings to ground (no negative supply needed)
  • 350µA total supply current

应用

  • Single-supply signal conditioning
  • Sensor amplifier interfaces
  • 直流增益块
  • Comparators
  • 有源滤波器

The LM358N from Texas Instruments is the dual version of the LM324, containing two independent general-purpose op-amps in a compact 8-pin DIP package. It shares all the LM324’s key advantages: single-supply operation from 3V to 32V, input common-mode range including ground, output swinging to near ground, and low 350µA total supply current. The 8-pin DIP footprint is smaller than the LM324’s 14-pin, making the LM358 ideal when only one or two op-amp channels are needed. The pinout follows the industry-standard dual-op-amp convention (same as NE5532, TL072, LM833), allowing easy upgrades to higher-performance op-amps. The 1MHz GBW and 0.5V/µs slew rate are adequate for DC signal conditioning, audio preamplification, and low-frequency active filtering. At $0.20/1ku, the LM358 is one of the most cost-effective op-amps available. The N suffix denotes the PDIP-8 through-hole package.

The LM358N operates identically to half of the LM324. Each op-amp uses a PNP differential input stage that allows the common-mode range to include ground. The class AB output stage can source current (pulling output toward V+) and sink current (pulling output toward ground), with the output able to swing to within ~5mV of ground when sinking small currents. In single-supply operation, the signal must remain between 0V and V+−1.5V at both input and output. The internal compensation capacitor ensures stability in voltage-follower (unity gain) configuration without external components. Closed-loop bandwidth = GBW / noise_gain; at gain=10, BW ≈ 100kHz. The 0.5V/µs slew rate limits the full-power bandwidth: at 5V peak output, BW_max = 0.5/(2π×5) ≈ 16kHz. For AC-coupled applications, a V+/2 bias voltage is needed; for DC ground-referenced signals (sensors, battery monitors), no bias is required.

针脚 名称 类型 说明
1 1OUT 输出 Op-amp 1 output
2 1IN− 输入 Op-amp 1 inverting input
3 1IN+ 输入 Op-amp 1 non-inverting input
4 GND / V− 电源 Ground or negative supply
5 2IN+ 输入 Op-amp 2 non-inverting input
6 2IN− 输入 Op-amp 2 inverting input
7 2OUT 输出 Op-amp 2 output
8 VCC 电源 Positive supply (3V to 32V)

LM358N uses the PDIP-8 (N) package with industry-standard dual op-amp pinout: Pin 1 = Output A, Pin 2 = Inverting Input A (-), Pin 3 = Non-inverting Input A (+), Pin 4 = GND/VEE, Pin 5 = Non-inverting Input B (+), Pin 6 = Inverting Input B (-), Pin 7 = Output B, Pin 8 = VCC. This pinout is shared by all dual op-amps in DIP-8 including LM358, LM2904, RC4558, NE5532, and TL072. The single-supply operation (3V-32V or ±1.5V to ±16V) allows inputs to go to ground without phase reversal. Output swings to within 0-20mV of ground in single-supply configuration. For surface-mount, LM358DR (SOIC-8) provides identical pinout.

  • Non-Inverting Amp: Sensor (0-0.5V) → 1IN+; Rf=90kΩ, Rg=10kΩ; Gain=10; 1OUT = 0-5V; VCC=5V single supply
  • Comparator: Voltage sense → 1IN+; reference → 1IN−; no feedback; 1OUT drives relay driver or LED
  • Differential Amp: Bridge sensor → 1IN+ and 1IN−; Rf/Rg set gain; 1OUT = amplified difference
  • AC-Coupled Preamp: VCC=9V; two 100kΩ divider → V+/2 = 4.5V at 1IN+; AC signal through cap → Rin → 1IN−; Rf feedback
模型 制造商 主要区别 包装 Specs
LM358AN TI Improved version with lower input offset voltage 2mV max vs 7mV for precision signal conditioning DIP-8 1.1MHz/0.6V/µs
LM358B TI Modern upgrade: 36V supply, 1.2MHz GBW, 3mV offset, and rail-to-rail output swing DIP-8 1.2MHz/36V
LM324N TI Quad op-amp version (4 channels) in DIP-14 for multi-stage signal chain applications DIP-14 1.1MHz/4-ch
LM2904N TI Automotive-grade -40 to +125C version with enhanced ESD protection for harsh environments DIP-8 1.1MHz/-40-125C
LMV358IDR TI Low-voltage 2.7-5.5V version with 1MHz GBW for 3.3V and battery-powered systems SOIC-8 1MHz/2.7-5.5V
NE5532P TI Dual low-noise audio op-amp with 10MHz GBW for audio preamp and filter applications DIP-8 10MHz/9V/µs

LM358 is the industry-standard dual general-purpose op-amp with 1.1MHz GBW and 3-32V single-supply operation. Input common-mode range includes ground for single-supply sensor interfacing. LM358B offers modern 36V rail-to-rail output. For quad needs, LM324 provides 4 channels. For audio, NE5532 offers 10MHz GBW and low noise. LM2904 extends temperature range to 125C for automotive applications.

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